Answered On Last Updated: Aug 20, 2020
Peer review is a process through which a piece of research (especially an article) is evaluated by other experts in the field ahead of publication. Reviewers judge the rigorousness of the methods and the new contribution to knowledge made by the article, which allows the editor(s) to determine its suitability for publication. Most journals use peer review, and some search tools allow you to search for peer-reviewed resources specifically.
Generally, the author(s) and the reviewer(s) do not know each other's identity (double blind peer review), but single blind peer review (where the reviewers know the identity of the author, but not vice versa) and triple blind peer review (where not even the editor knows the identity of the author) also exist.